Which products and versions are affected by CVE-2023-45288?

Affected: forgejo (alpine); go (alpine); rclone (alpine), among others. The full list is in the CVE brief.

Is CVE-2023-45288 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2023-45288 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2023-45288?

No public exploit code is known.

Is there a fix for CVE-2023-45288?

Fixed versions are available, including aactl 0.4.12-r11, actions-runner-controller 0.9.0-r1, actions-runner-controller-fips 0.9.1-r0.

How urgently should CVE-2023-45288 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2023-45288

High

net/http, x/net/http2: close connections when receiving too many headers

Published Apr 4, 2024 · Updated Sep 10, 2026 · Also known as BIT-golang-2023-45288, DEBIAN-CVE-2023-45288, GHSA-4v7x-pqxf-cx7m, GHSA-7f4j-64p6-5h5v, GO-2024-2687, GO-2024-2726, SUSE-SU-2024:1121-1, SUSE-SU-2024:1122-1, SUSE-SU-2024:1160-1, SUSE-SU-2024:1161-1, SUSE-SU-2024:2108-1, SUSE-SU-2024:3089-1, SUSE-SU-2024:3155-1, SUSE-SU-2024:3755-1, SUSE-SU-2024:3772-1, SUSE-SU-2024:3938-1, UBUNTU-CVE-2023-45288, USN-6886-1

Key Facts

Patch immediately

CVE-2023-45288 is a high-severity vulnerability (CVSS 7.5 v3.1) affecting forgejo (alpine), go (alpine), rclone (alpine) and 22 more products.
It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
EPSS estimates a 92% probability of exploitation in the next 30 days.
Fixed versions are available, including aactl 0.4.12-r11, actions-runner-controller 0.9.0-r1, actions-runner-controller-fips 0.9.1-r0.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v3.1

7.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS (30-day exploit likelihood)

92%

Higher than 99.8% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

None known

Get the full CVE-2023-45288 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

An attacker may cause an HTTP/2 endpoint to read arbitrary amounts of header data by sending an excessive number of CONTINUATION frames. Maintaining HPACK state requires parsing and processing all HEADERS and CONTINUATION frames on a connection. When a request's headers exceed MaxHeaderBytes, no memory is allocated to store the excess headers, but they are still parsed. This permits an attacker to cause an HTTP/2 endpoint to read arbitrary amounts of header data, all associated with a request which is going to be rejected. These headers can include Huffman-encoded data which is significantly more expensive for the receiver to decode than for an attacker to send. The fix sets a limit on the amount of excess header frames we will process before closing a connection.

Affected Products

2,431 affected entries in total

Product	Affected versions	Fixed in
forgejoalpine	See advisory	1.21.10.0-r0
goalpine	See advisory	1.21.9-r0
rclonealpine	See advisory	1.67.0-r0
aactlchainguard	See advisory	0.4.12-r11
actions-runner-controllerchainguard	See advisory	0.9.0-r1

20 more affected products in the full CVE brief

Patched Releases

aactl

0.4.12-r11

actions-runner-controller

0.9.0-r1

actions-runner-controller-fips

0.9.1-r0

addon-resizer

1.8.20-r1

addon-resizer-fips

1.8.20-r1

advanced-cluster-security/rhacs-central-db-rhel8:4.4.2

advanced-cluster-security/rhacs-collector-rhel8:4.4.2

advanced-cluster-security/rhacs-collector-slim-rhel8:4.4.2

advanced-cluster-security/rhacs-main-rhel8:4.4.2

advanced-cluster-security/rhacs-operator-bundle:4.4.2

advanced-cluster-security/rhacs-rhel8-operator:4.4.2

advanced-cluster-security/rhacs-roxctl-rhel8:4.4.2

advanced-cluster-security/rhacs-scanner-db-rhel8:4.4.2

advanced-cluster-security/rhacs-scanner-db-slim-rhel8:4.4.2

advanced-cluster-security/rhacs-scanner-rhel8:4.4.2

advanced-cluster-security/rhacs-scanner-slim-rhel8:4.4.2

advanced-cluster-security/rhacs-scanner-v4-db-rhel8:4.4.2

advanced-cluster-security/rhacs-scanner-v4-rhel8:4.4.2

amass

4.2.0-r8

amazon-cloudwatch-agent

1.300039.0-1.amzn2, 1.300039.0-1.amzn2023

amazon-ecr-credential-helper

0.7.1-4.amzn2023

amazon-ssm-agent

3.3.859.0-1.amzn1, 3.3.859.0-1.amzn2, 3.3.859.0-1.amzn2023

apko

0.14.0-r7

application-gateway-kubernetes-ingress

1.7.7-1

apptainer

1.3.6-150600.4.6.1, 1.3.6-4.1, 1.4.5-bp160.1.1

Timeline

Publicly disclosed
Apr 4, 2024
Last updated
Sep 10, 2026

Weakness Type

CWE-400 Uncontrolled Resource Consumption

References

15 more references in the full CVE brief

FAQ

Common Questions.

An attacker may cause an HTTP/2 endpoint to read arbitrary amounts of header data by sending an excessive number of CONTINUATION frames.
Affected: forgejo (alpine); go (alpine); rclone (alpine), among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including aactl 0.4.12-r11, actions-runner-controller 0.9.0-r1, actions-runner-controller-fips 0.9.1-r0.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2023-45288 Running On Your Attack Surface?

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